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Jabo horns?

Anyone here has experience of the Jabo horns made in Germany?

I am most likely going to update the xo's of my Altec/Onken speakers first but as idea of new horns as a reference to my original Altec H-811B cast aluminium ones intrigues me as well as later some diy option, the Jabo KH-55 model might be one solution to try on my way..

They would fit the system nicely also by the looks of the pis below found from internet

From what I read on the web they look an interesting project
Keep us updated on how it goes

Loves anything from Pain of Salvation to Jeff Buckley to Django to Sarasate to Surinder Sandhu to Shawn Lane to Nick Drake to Rush to Beth Hart to Kate Bush to Rodrigo Y Gabriela to The Hellecasters to Dark Sanctury to Ben Harper to Karicus to Dream Theater to Zero Hour to Al DiMeola to Larry Carlton to Derek Trucks to Govt Mule to?Humour: One of the few things worth taking seriously

i don't know what drivers you plan to use but i've heard these horns with JBL 2451 fitted with truextent be diaphragms and despite a need for an 1.5"->2" adapter it's truly a great sound - even in a real nearfield situation (under 2m from them) they integrate wonderfully, no beaming, no any horn nastiness one can experience with lesser designs. i was really caught by surprise as they are simple exponential profiles and these days other profiles gets more prominence and exposure. could be also it's a perfect synergy between horn and driver - which matters more than a horn itself - but KH-55 is high on my personal list.

Anyway have had those Jabo horns in my system for some time now and they're really good. I'm using Altec 806A 16 ohm driver and despite of the needed adapter there are no signs of unwanted coloration or beaming. Here is a pic of the setup..